# BAK-401HDB-AM - 1.25" TO 1.375" BEARING & AXLE UPGRADE - ENHANCED KIT (2010-2016)

BAK-401HDB-AM - 1.25" TO 1.375" BEARING & AXLE UPGRADE - ENHANCED KIT (2010-2016) - ARGO PARTS  
  
**AFTERMARKET PREMIUM OUTER BEARING**  
**ARGO OEM INNER BEARINGS, AXLES, FLANGES, CORK GASKETS, AND HARDWARE  
  
**Looking to upgrade your HD 700 or HDI 750 models axles and bearings from the smaller 1.25" ID size to the 1.375" ID that was released in 2017 which offers improved durability and axle strength?  
  
This enhanced kit includes the minimum parts needed as well as all new outer flanges and bearing seats along with nuts and bolts to change out your axles, bearings, and sprockets.  If you DO NOT want new flanges and bearing seats, order kit BAK-400-AM.  Your chains will remain the same part numbers, however if you need a new chain kit order part Ck-103.  
  
**This kit fits all 2010 - 2017 8x8 HD 700, HDI 750, and HDI SE 8x8 models.  If your 2016 HDI has aluminum rims stock from the factory, you already have 1.375" axles.  
  
  
**The Enhanced 1.375" Upgrade Kit includes:  
  
(4)  810-122  F/R Axles  
(4)  810-123  Mid Axles  
(6)  106-15-025  Retaining Ring  
(4)  805-142 Sprocket, D50x25T-16/32 INT  
(8)  805-143 Sprocket, S60x19T-16/32 INT  
(6) 10040J  E-Clip  
(16)  606-90 Cork Gasket  
(8)  101-123AM  (AFTERMARKET) 1.375"x72mm Premium Aftermarket Bearing  
(8)  200-0184-001  (ARGO OEM) 1"x62mm Inner Bearing  
(8)  200-0005-010  High Carbon Washer  
(8)  10041J  Axle Bolt  
+  
(8)  606-88 Outer Flange  
(8)  606-89 Bearing Seat  
(16)  200-0217-200-S10  Hex Bolt  
(16)  108-27-025  Lock Washer  
(16)  112-187-025 Bolt  
(16)  117-118-025 Lock Nut

## Details

- **Price:** 4334.5 USD
- **Vendor:** DOC'S FULL BORE OUTDOOR
- **Tags:** 1.375" Upgrade, Argo Parts, Freight, OEM Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4334.50 USD | In stock |

## Images

- BAK-401HDB-AM - 1.25" TO 1.375" BEARING & AXLE UPGRADE - ENHANCED KIT (2010-2016) - ARGO PARTS
- RBI AFTERMARKET ARGO BEARING PROMOTION
- Argo Genuine Parts and Accessories

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> Source: [Doc's Full Bore Outdoor](https://parts.docsfullboreoutdoor.com/products/bak-401hdb-am-1-25-to-1-375-bearing-axle-upgrade-enhanced-kit-2010-2016-copy)
> Updated: 2026-07-27